CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > ANSYS > FLUENT

Multiphase Through Porous Media

Register Blogs Members List Search Today's Posts Mark Forums Read

LinkBack Thread Tools Search this Thread Display Modes
Old   August 9, 2021, 17:11
Unhappy Multiphase Through Porous Media
New Member
ryan smith
Join Date: Aug 2021
Posts: 1
Rep Power: 0
rsmith475 is on a distinguished road
I am trying to simulate evaporation of coolant through porous media. However, when I probe the volumetric average of fluid temperature, I get temperatures that are thirty degrees C higher than the saturation tempearture (set as constant). Furthermore, my volume fraction probe seems to indicate that phase change is occuring; however, the volume fraction increases in a gradient rather than creating bubbles. I cannot find any valuable resources on this specific application of cfd online. I am suspecting that this may be happeneing because fluent calculates an effective heat transfer coefficienct for the porous media, so the tempearture may actually be an average temeprature (not saturation tempearture). Perhaps the reason I am not seeing "bubbles" is also due to the superficial velocity formulations.

My mesh size is 50 micrometers, eulerian multiphase from liquid to vapor (liquid is phase 1). This should be small enough to capture the effects I need. Perhaps my time step is too large (0.0005 seconds). Although, I am having no issues with divergence.

Does anybody have experince with multiphase evaporation in porous media with fluent? Please let me know how you got it to work or if there are any suggestions.

Last edited by rsmith475; August 9, 2021 at 18:16.
rsmith475 is offline   Reply With Quote


evaporation, fluent, multiphase, porous meida, saturation temeprature

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Porous Media Zone Thickness TheKitchenCleaner FLUENT 0 October 5, 2020 01:42
Multiphase Porous Media Flow - Convergence Issues VT_Bromley FLUENT 7 May 14, 2020 17:34
Multiphase reactive flows in Porous media Prateek garg FLUENT 0 April 13, 2018 02:02
Porous media setup issues in Fluent Bernard Van FLUENT 29 January 26, 2017 05:09
Multiphase flow in porous media and relative permeabilities sirpolar Fluent Multiphase 1 July 24, 2016 06:41

All times are GMT -4. The time now is 16:38.